Dyestuff and mode of producing it



STATES nnny HART, or BALLARAT EAST, vrc'ronra, nnsrnamn, ASSIGNOR or ONE-HALF ro ISABELLA JESSIE srnwanr, or nALLAnar wnsnvroronm, AUSTRALIA.

essors.

Ito Drawing.

To all whom it may concern:

Be it known that I, EADY HART, a subject of the King of Great Britain and Ireland, etc., residing at Hart Royal, Kline street, Ballarat East, in the State of Victoria, Commonwealth ofAustralia, have invented certain new and useful Improved Dyestuffs and Mode of Producing Them; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art-to which it appertains to make and use the same. v

The object of this invention is to produce new dye-stuffs of high quality at low cost from chromogenicv trees,shrubs, or plants, that is any one or more of the following partsthe wood, root, bark, kino, branches as a whole or leaves.

A limited amount of the vegetation indigenous to-Australia is known to'be usable for making dye with commercial success, though it is known that the resin of the grass tree, and that the banana fruit and stalk are useful for making dye. My claims however do not cover the use of any vegetation in manner already known.

Myricetin (a glucoside of quercitrin) has been isolated from eucalyptus, but the dyestuff last-named has not been so produced in a commercial way, so far as I am aware' The dyestuffs T manufacture are appli-,

cable to the dyeing of wool, cotton, silk, leather, and other materials; and they will not injure persons who make the dye-stuffs or wear the material dyed, nor will that material be injured. On the contrary it will preserve such strength, softness, and luster, as it had before being dyed. This may be due to the absence of strong acids or the likein carrying out my invention. 7

Known processes are usable for the application of my dye-studs, such as boiling the articles to be dyed in liquid to which the dye-stuff is added, and subsequently rinsing in other suitable liquid; the use of mordant (according to the material to be dyed, and the dye-stuff color) being advisable in some casesas when other known dyes are used.

In carrying out my process I first prepare Specification of Letters Patent.

DYESTUEF AND MODE OF PRODUCING IT Patented Dead, rear.

Application filed February 18, 1920. Serial No. 359,105.

a vegetable base by reducing it to small parts or pieces. 1 The use of wood which has been converted nto sawdust, or into small parts by grinding, yields good results; but the reduction of the vegetation may be effected by making shavings, or cutting, chopping or so on.

Suchpreparation of the vegetation .not only causes relatively speedy extraction, but also very thorough extraction, so that the dye-stuffs are produced in relatively large quantities, and therefore economically.

I also prepare an extracting solution. For this purpose a stock solution is preferablyrprepared, by boiling in water sodium carbonate and unslaked lime, or, more briefly, lime. The proportions I find best are to each gallon of water about 1 lb. of

sodium carbonate and about 1 lb. of lime.

Y The term soda will be used in the claims to indicate any suitable sodium compound, including washing soda or soda crystals.

When this compound has been well boiled, say for 20 minutes, the resultant liquid is the stock solution. It is to be noted that sodium hydroxid- (caustic soda) is not an equivalent or substitute for any ingredient of my solution, and its use is not claimed;

From this stock solution the extracting solution is made by the addition of water. Thus to 100 gallons of water about 10 to '15 gallons of the stock solution is added. This extracting solution may be made if desired, direct from the stated ingredients instead of from a stock solution.

Sediment in the extracting solution or in the stock solution is to be removed before proceeding to use the extracting solution.

To apply the extracting solution the vegetable baseto be utilized is boiled, simmered, or heated highly in that solution.

In a case in which with 100 gallons of the extractingsolution (containing about 13 lbs. of each ingredient, sodium carbonate and lime) the vegetable base has been added to the extentof 70lbs. good results have been obtained by boiling. fora short time and then by simmering until the color the liquid attainsis as desired.

The period of extraction depends onj'the color of dyestuff desired, the "deeperior stronger the color the longer the period and the greater the proportion of the lime and sodium carbonate to water in the extracting solutiomwhich, as it boils or sim iners, extracts coloring matter from the vegetation. WV-ith experience it will be found what strength of extracting solutions will best suit any vegetable base.

Altering the proportions of ingredients varies the strength and action of the solu tion.

An operator will readily find from experience the approximate shade of dyestuif that will be obtained from a particular vegetable base.

The liquor resulting from the said treat ment of vegetation is to be cleared of sediment and solid matter, by filtering or straim ing, and the filtrate or the like is my dyestulf in liquid form, but it can be evaporated to a plastic or a solid form for convenient commercial handling.

Vegetable bases which are abundant and cheap. and which have not hitherto been uti; lized for dye making have been used by me with success. Although vegetati on in general not hitherto used for dye-stuff making is suitable for such utilization, and pine wood saw.

dust yields good pink and brown dye-stalls by my process, yet I specify in particular my results from the vegetation next enumerated, by the use of my process, the colors of the dye-stuntsobtained being stated. These colors will be obtained in various shades.

Brown dye-stufl's1nanufactured by utilizing Eaeoocwpus cuprcss'jowns cherry).

Brown d ye-stufl s-nianutactured by utilizing Acacia lmrpophylla (Brigalovv).

Yellow, and orange dye-stufi's-manutactured by utilizing Mallozus discolor (yellow kamala tree). 1

Pink and fawn dye-stuffsmanufactured by utilizing a Urtsumrlna (shee oak), includ- 85 outside Australi .Pink dye-stufisnianufactured by utilizing Acacia polg botrya.

Gray dye-stuii's-manufactured by utilizing Ac (1. DZ-67(Ut03j/l07t (blackwood).

Yellow. orange, and red dyc-stu'll's maniu' iactured by utilizing Eucalyptus cozy 222608 (bloodwood).

Pink, red and brownish dye-stu'lts manufactured by utilizing 'Eucalg ptus wast Peta. (red gum).

Black, dark brown, and brown dyestuffs manufactured by utilizing Eucalyptus.(zm'ygclali'im (black peppermint).

Flesh and other pink dye-stufis-manufactured by utilizing Bafiiksia, for example B cm/lvsia mew imam (pink honeysuckle).

Greenish dye-stufis manutactured by utilizing Aster argophyll'us (musktree).

Yellow and brown dye-stuits -manutac- (native in Cessna-Tina egulsctz'folia, which extends tured by utilizing Eucalyptus globules (blue gum); p The Eucalyptus globulus vegetation aforesaid yields dye-stuii by simmering in my extracting solution; a. mixture, with the wood, of bark, and any matter carried by the product obtained by immersing a chroniogenie vegetable substance divided into small parts in a solution containing sodium carbonate and lime bollin the minture'and 1 a a filtermgtne resultant liquor.

3. Improved dye-stufi consisting'of the,

filtered resultant obtained by subjecting small portions of a chromogenic vegetable substance reduced to sawdustto a heated solution COIllLtllIlll'lgfliJOlli? 9 to 13 lbs. of sodinm carbonate and about Ste 13 lbs. of

lime to' eachlOO gallons of water.

l. Improved dye-stufi' consisting of the filtered product obtained by the treatment with a boiling solution of sodium carbonate and lime in water oi the vegetable substance botanically known as Eucalyptus amp ode limz.

The process of manufacturing dyestull which consists in reducing a chromogenic vegetable substanceto the condition of sawdust and treating it in a boiling solution of sodium carbonate and lime, filtering the resultantliquid, and evaporating it. p

6. The process of manufacturing dye-stuff whichconsists insubjecting a chromogei'iic vegetable substance. in a condition of sawdust to a heated solution which contains to every 100 gallons of water about 9 to 13 lbs. of sodium carbonate and about 9 to 13 lbs. of lime. i

TLThe process of dye-stuff making consisting of treating the Vegetable substance botanically known as Bacall 121. (may gala line by subjecting tlie'same to a heated solution of sodium carbonate and lime, and then filtering theresultant liquor and evaporate ing it. i i

In1 witness whereof I have hereunto set my hanc.

EADY Him. 

